Also cash is the only thing that works if your system gets unfair in some way. It's the only thing that allows a hobo to stay in touch with society, paying in a gay bar without trace, setup a political group that the state would deem immoral, experiment with banned drugs, buy censored books and journals, etc

If you like democracy, you need a small, but resiliant grey zone. You need to allow a few people to take the risk of doing what's condamned. It's not sexy, but it's necessary.

Do not outlaw cash.